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References
1. Abalmazov E.I. New technology of protection of telephone conversations//the Special technics. 1998. 1. with. 4... 8.
2. Baranov B.., Valkov G. V, Yeremeyev M. A, etc. information Protection in systems and communications mediums. The manual. St.-Petersburg: WICCA of a name of A.F.Mozhaisk, 1994. 113.
3. Gavrish V. F. The practical manual on commercial secret protection. - Simferopol: Taurida, 1994. 112 with.
4. Kalinin N.G.as to be saved from "a telephone ear" and to save confidentiality of negotiations?//WATCH. 1997. 5. with. 28... 31.
5. Lagutin V. S, Petrakov A.V.leak and information protection in express speaker circuits. : Energoatomizdat, 1996. 304 with.
6. The review of the active means of protection//Protection information. - 1997. 6. With. 61... 63.
7. Singularities of devices of pick-up of the information and methods of their lock. : Tomsk, "Curl", 1996.32 with.
8. A suppressor of telephone bookmarks -003 of "Prokrust". The User guide. : Nelk, 1996.12 with.
9. The special technics: the Directory. : PO information Protection, 1998. 32 with.
10. The special technics of protection and information control: the Directory. : Masky, 1998.44 with.
11. Technical systems of protection of the information: the Directory. : Joint-Stock Company "¡Ñ½", 1998. 56 with.
12. as of technical protection of the information. : Publishing house "Axis", 1998. 336 with.
13. The device of protection telephone "Barrier - 1". The Operating instruction. : Open Company "Ensanos", 1998. 4 with.
14. The device of protection of telephone lines and locations from listening "the Cicada - M". The Operating instruction. : Open Company "Ensanos", 1998. 6 with.
